Pacific Islands' Bilateral Trade: The Role of Remoteness and of Transport Costs

Bilateral trade of geographically distant countries is likely to be negatively affected by the distance separating them from their trading partners and positively affected by their remoteness, defined as the average weighted distance between two countries with weights reflecting the absorptive capacity of the partner country. In presence of competitive transport costs, the effect of remoteness and distance is diluted. An augmented gravity model applied to the Pacific islands' bilateral trade from 1980 to 2004 shows that a doubling of the elasticity of distance would decrease their average bilateral trade by 80 per cent. Remoteness positively affects the Pacific islands' bilateral trade, but does not compensate for the negative effect of distance. The opposite is found for the Caribbean islands, where the elasticity of trade with respect to remoteness is eight times bigger than that for the Pacific islands. ...bilateral trade, remoteness, transport costs, infrastructure, gravity model, Pacific islands

A New Tariff Database for Selected Least Developed Countries

This paper presents a new hand-gathered database on tariff rates for 18 least developed countries and Korea at the 4-digit level in HS 1988 and SITC revision 2. The database contains one observation per country and per decade starting from the 1970s to 2000/2002. Over time, the tariff schemes of the LDCs follow a symmetric bell-shaped distribution with low rates in the 1970s, which are raised in the 1980s, and then lowered or kept constant in the 1990s and substantially lowered in 2000/02. The analysis in the paper shows that the LDCs have already lowered their average tariff rates to those levels considered ‘optimal’ by many economists and that they have not shifted the protection over time, keeping the highest rates on labor-intensive and on medium skill manufactures and the lowest rates on mineral products.Tariff Rates, Protection, Commercial Policy, Least developed countries

The Importance of Rock Mass Damage in the Kinematics of Landslides

The stability and kinematics of rock slopes are widely considered to be functions of lithological, structural, and environmental features. Conversely, slope damage features are often overlooked and considered as byproducts of slope deformation. This paper analyzes and discusses the potential role of slope damage, its time-dependent nature, and its control on both the stability of rock slopes and their kinematics. The analysis of several major landslides and unstable slopes, combined with a literature survey, shows that slope damage can play an important role in controlling short- and long-term slope stability. Seasonal and continuously active events cause permanent deformation within the slope due to the accumulation of slope damage features, including rock mass dilation and intact rock fracturing. Rock mass quality, lithology, and scale control the characteristics and complexity of slope damage, as well as the failure mechanism. The authors propose that the role of slope damage in slope kinematics should always be considered in slope stability analysis, and that an integrated characterization–monitoring–numerical modelling approach can enhance our understanding of slope damage, its evolution, and the controlling factors. Finally, it is emphasized that there is currently a lack of guidelines or frameworks for the quantitative assessment and classification of slope damage, which requires a multidisciplinary approach combining rock mechanics, geomorphology, engineering geology, remote sensing, and geophysics

Integration of geomatics techniques for digitizing highly relevant geological and cultural heritage sites: The case of san Leo (Italy)

The research activities described in this contribution were carried out at San Leo (Italy). The town is located on the top of a quadrangular rock slab affected by a complex system of fractures and has a wealth of cultural heritage, as evidenced by the UNESCO's nomination. The management of this fragile set requires a comprehensive system of geometrical information to analyse and preserve all the geological and cultural features. In this perspective, the latest Geomatics techniques were used to perform some detailed surveys and to manage the great amount of acquired geometrical knowledge of both natural (the cliff) and historical heritage. All the data were also georeferenced in a unique reference system. In particular, high accurate terrestrial laser scanner surveys were performed for the whole cliff, in order to obtain a dense point cloud useful for a large number of geological studies, among others the analyses of the last rockslide by comparing pre-And post-event data. Moreover, the geometrical representation of the historical centre was performed using different approaches, in order to generate an accurate DTM and DSM of the site. For these purposes, a large scale numerical map was used, integrating the data with GNSS and laser surveys of the area. Finally, many surveys were performed with different approaches on some of the most relevant monuments of the town. In fact, these surveys were performed by terrestrial laser scanner, light structured scanner and photogrammetry, the last mainly applied with the Structure from Motion approach. \ua9 Authors 2017. CC BY 4.0 License

Innate Immune Responses of Pulmonary Epithelial Cells to Burkholderia pseudomallei Infection

10.1371/journal.pone.0007308PLoS ONE410